A One-Round Living Greyhawk Yeomanry Regional Adventure
From the introduction:
The town of Singleton in the northeastern corner of the Yeomanry has always been a bone of contention between the League and the Kingdom of Keoland. Control of the town has shifted back and forth across the years. The Yeomanry has the strongest claim currently, with their control for the past several hundred years. Whispers of renewed interest in the town from Keoland have sent you east to Singleton to gauge the lay of the land.
A Yeomanry regional adventure for [character levels] 6 - 12, and Part 1 of the Iron River series.
Note: This adventure will be of particular interest to military PCs and all loyal Yeomen.